1.7035 SAE5140 GB40Cr SCR440 Hot Rolled Alloy Steel Round Bar
1. Features
1.Belong to the ultra-high strength steel
2. High strength and toughness
3. Good hardenability
2. Similar Standards
Chinese |
American |
German |
Japanese |
ISO |
GB |
AISI |
DIN |
JIS |
|
40Cr |
SAE5140 |
1.7035 |
SCr440 |
41Cr4 |
3. Chemical Composition
Grades |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
Ni |
5140 |
0.37-0.44 |
0.17~0.37 |
0.70~0.90 |
≤0.040 |
≤0.035 |
0.70~0.90 |
≤0.10 |
≤0.030 |
≤0.030 |
40Cr |
0.37-0.44 |
0.17-0.37 |
0.5-0.8 |
≤0.30 |
≤0.035 |
0.80~1.10 |
≤0.10 |
≤0.030 |
≤0.30 |
1.7035 |
0.38-0.45 |
≤0.4 |
0.6 - 0.9 |
≤ 0.025 |
≤ 0.035 |
0.9 - 1.2 |
≤0.10 |
≤0.030 |
≤0.30 |
SCr440 |
0.38~0.43 |
0.15~0.35 |
0.60~0.90 |
≤0.030 |
≤0.030 |
0.90-1.20 |
≤0.10 |
≤0.030 |
0.25 |
4. Heat Treatment
Quenching |
Tempering |
Heating Temperature/ºC |
Cooling |
Hardness/HRC |
Heating Temperature/ºC |
Cooling |
Hardness/HRC |
820-840 |
Oil |
≥53 |
450-650 |
Air |
25-40 |
5. Stock size
Plate |
Thickness |
20-120mm |
Width |
2200mm |
Length |
4000-10000mm |
round bar |
Diameter |
16-450mm |
Length |
4000-10000mm |
6. Product pictures